first commit

node_modules/react-native/ReactCommon/react/nativemodule/fantomtestspecificmethods/internal/FantomForcedCloneCommitHook.cpp

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "FantomForcedCloneCommitHook.h"
+#include <react/renderer/uimanager/UIManagerBinding.h>
+#include <react/renderer/uimanager/primitives.h>
+
+namespace facebook::react {
+
+namespace {
+
+std::shared_ptr<const ShadowNode> findAndClone(
+    const std::shared_ptr<const ShadowNode>& node) {
+  if (node->getProps()->nativeId == "to-be-cloned-in-the-commit-hook") {
+    return node->clone({});
+  }
+
+  auto children = node->getChildren();
+  for (int i = 0; i < children.size(); i++) {
+    auto& child = children[i];
+    auto maybeClone = findAndClone(child);
+    if (maybeClone != child) {
+      children[i] = maybeClone;
+      return node->clone(
+          {.props = ShadowNodeFragment::propsPlaceholder(),
+           .children =
+               std::make_shared<std::vector<std::shared_ptr<const ShadowNode>>>(
+                   children)});
+    }
+  }
+
+  return node;
+}
+
+} // namespace
+
+void FantomForcedCloneCommitHook::commitHookWasRegistered(
+    const UIManager& /*uiManager*/) noexcept {}
+
+void FantomForcedCloneCommitHook::commitHookWasUnregistered(
+    const UIManager& /*uiManager*/) noexcept {}
+
+RootShadowNode::Unshared FantomForcedCloneCommitHook::shadowTreeWillCommit(
+    const ShadowTree& /*shadowTree*/,
+    const std::shared_ptr<const RootShadowNode>& /*oldRootShadowNode*/,
+    const RootShadowNode::Unshared& newRootShadowNode) noexcept {
+  auto result = findAndClone(newRootShadowNode);
+
+  return std::static_pointer_cast<RootShadowNode>(
+      std::const_pointer_cast<ShadowNode>(result));
+}
+
+} // namespace facebook::react

node_modules/react-native/ReactCommon/react/nativemodule/fantomtestspecificmethods/internal/FantomForcedCloneCommitHook.h

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <react/renderer/core/ShadowNode.h>
+#include <react/renderer/uimanager/UIManager.h>
+#include <react/renderer/uimanager/UIManagerCommitHook.h>
+
+namespace facebook::react {
+
+struct FantomForcedCloneCommitHook : public UIManagerCommitHook {
+  void commitHookWasRegistered(const UIManager & /*uiManager*/) noexcept override;
+
+  void commitHookWasUnregistered(const UIManager & /*uiManager*/) noexcept override;
+
+  RootShadowNode::Unshared shadowTreeWillCommit(
+      const ShadowTree &shadowTree,
+      const std::shared_ptr<const RootShadowNode> &oldRootShadowNode,
+      const RootShadowNode::Unshared &newRootShadowNode) noexcept override;
+};
+
+} // namespace facebook::react